Function line_span::find_line_range

pub fn find_line_range(text: &str, index: usize) -> Range<usize>

Find the start and end (byte index) of the line, which index is within.

Note the end is the last character, excluding \n and \r\n.

See also

• find_line_start to find only the start of the line.
• find_line_end to find only the end of the line.
• find_next_line_range to find the start and end of the next line.
• find_prev_line_range to find the start and end of the previous line.

Panics

Panics if index is out of bounds.

Example

let text = "foo\nbar\nbaz";
let i = 5; // 'a'

let range = line_span::find_line_range(text, i);
assert_eq!(range, 4..7);

let line = &text[range];
assert_eq!(line, "bar");